Datasheet > 3953

3953

更新时间： 2024-11-26 22:13:47

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器电机
页数	文件大小	规格书
14页	229K
描述
FULL-BRIDGE PWM MOTOR DRIVER

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

3953 数据手册

3953

FULL-BRIDGE PWM MOTOR DRIVER

Designed for bidirectional pulse-width modulated (PWM) current control

of inductive loads, the A3953S— is capable of continuous output currents to

1.3 A and operating voltages to 50 V. Internal fixed off-time PWM current-

control circuitry can be used to regulate the maximum load current to a

desired value. The peak load current limit is set by the user’s selection of an

input reference voltage and external sensing resistor. The fixed off-time pulse

duration is set by a user- selected external RC timing network. Internal circuit

protection includes thermal shutdown with hysteresis, transient-suppression

diodes, and crossover current protection. Special power-up sequencing is not

required.

LOAD

SUPPLY

BRAKE

15 OUT

REF

MODE

GROUND

LOGIC

GROUND

SENSE

LOGIC

SUPPLY

With the ENABLE input held low, the PHASE input controls load current

polarity by selecting the appropriate source and sink driver pair. The MODE

input determines whether the PWM current-control circuitry operates in a

slow current-decay mode (only the selected source driver switching) or in a

fast current-decay mode (selected source and sink switching). A user-

selectable blanking window prevents false triggering of the PWM current-

control circuitry. With the ENABLE input held high, all output drivers are

disabled. A sleep mode is provided to reduce power consumption.

PHASE

10 OUT

LOAD

SUPPLY

ENABLE

Dwg. PP-056

Note the A3953SB (DIP) and the A3953SLB

(SOIC) are electrically identical and share a

common terminal number assignment.

When a logic low is applied to the BRAKE input, the braking function is

enabled. This overrides ENABLE and PHASE to turn off both source drivers

and turn on both sink drivers. The brake function can be used to dynamically

brake brush dc motors.

ABSOLUTE MAXIMUM RATINGS

Load Supply Voltage, V_BB. . . . . . . . . . 50 V

Output Current, I_OUT

(Continuous) . . . . . . . . . . . . . . 1.3 A*

The A3953S— is supplied in a choice of two power packages; a 16-pin

dual-in-line plastic package with copper heat-sink tabs, and a 16-lead plastic

SOIC with copper heat-sink tabs. For both package styles, the power tab is at

ground potential and needs no electrical isolation.

Logic Supply Voltage, V_CC. . . . . . . . . 7.0 V

Logic/Reference Input Voltage Range,

V_IN. . . . . . . . . . . -0.3 V to V_CC+ 0.3 V

Sense Voltage, V_SENSE

(V_CC= 5.0 V) . . . . . . . . . . . . . . . . 1.0 V

(V_CC= 3.3 V) . . . . . . . . . . . . . . . . 0.4 V

FEATURES

1.3 A Continuous Output Current

I Sleep (Low Current

Consumption) Mode

I Internal Transient-

Suppression Diodes

I Internal Thermal-

Shutdown Circuitry

I Crossover-Current

and UVLO Protection

Package Power Dissipation,

I 50 V Output Voltage Rating

P_D. . . . . . . . . . . . . . . . . . . . See Graph

I 3 V to 5.5 V Logic Supply Voltage

I Internal PWM Current Control

I Saturated Sink Drivers (Below 1 A)

I Fast and Slow Current-Decay Modes

I Automotive Capable

Operating Temperature Range,

T_A. . . . . . . . . . . . . . . . . -20˚C to +85˚C

Junction Temperature, T_J. . . . . . . +150˚C†

Storage Temperature Range,

T_S. . . . . . . . . . . . . . . . -55˚C to +150˚C

* Output current rating may be limited by duty

cycle, ambient temperature, and heat sinking.

Under any set of conditions, do not exceed the

specified current rating or a junction temperature

of 150˚C.

Always order by complete part number:

† Fault conditions that produce excessive junction

temperature will activate the device’s thermal

shutdown circuitry. These conditions can be

tolerated but should be avoided.

Part Number

Package

R_θJA

R_θJT

A3953SB

16-Pin DIP

43°C/W

67°C/W

6°C/W

A3953SLB

16-Lead SOIC

12 3 4 5 6 7...14

中文翻译

下载PDF

与3953相关器件

型号	品牌	获取价格	描述	数据表
3953_05	ALLEGRO	获取价格	FULL-BRIDGE PWM MOTOR DRIVER
395300002	MOLEX	获取价格	5.08mm (.200") Pitch Eurostyle™ Horizontal Pl
39530-0002	MOLEXKITS	获取价格	Pluggable PCB Vertical and Horizontal Header and Plug
395300003	MOLEX	获取价格	5.08mm (.200") Pitch Eurostyle™ Horizontal Pl
39530-0003	MOLEXKITS	获取价格	Pluggable PCB Vertical and Horizontal Header and Plug
395300004	MOLEX	获取价格	5.08mm (.200") Pitch Eurostyle™ Horizontal Pl
39530-0004	MOLEXKITS	获取价格	Pluggable PCB Vertical and Horizontal Header and Plug
395300005	MOLEX	获取价格	5.08mm (.200") Pitch Eurostyle™ Horizontal Pl
39530-0005	MOLEXKITS	获取价格	Pluggable PCB Vertical and Horizontal Header and Plug
395300006	MOLEX	获取价格	5.08mm (.200") Pitch Eurostyle™ Horizontal Pl

与3953相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

46
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

34
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

63
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

60

产品中心

服务支持

精选活动

关于我们

帮助中心

3953

3953 数据手册

与3953相关器件

与3953相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

3953

3953 数据手册

与3953相关器件

与3953相关文章

您还可以找

您在本页遇到什么问题？